Neutron activation for ITER

Conference · Mon Apr 29 04:00:00 EDT 1996

OSTI ID:244641

Barnes, C W ^[1]; Loughlin, M J ^[2]; Nishitani, Takeo ^[3]

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1. Los Alamos National Lab., NM (United States)
2. JET Joint Undertaking, Abingdon (United Kingdom)
3. Japan Atomic Energy Research Inst., Naka, Ibaraki (Japan). Naka Fusion Research Establishment

There are three primary goals for the Neutron Activation system for ITER: maintain a robust relative measure of fusion power with stability and high dynamic range (7 orders of magnitude); allow an absolute calibration of fusion power (energy); and provide a flexible and reliable system for materials testing. The nature of the activation technique is such that stability and high dynamic range can be intrinsic properties of the system. It has also been the technique that demonstrated (on JET and TFTR) the highest accuracy neutron measurements in DT operation. Since the gamma-ray detectors are not located on the tokamak and are therefore amenable to accurate characterization, and if material foils are placed very close to the ITER plasma with minimum scattering or attenuation, high overall accuracy in the fusion energy production (7--10%) should be achievable on ITER. In the paper, a conceptual design is presented. A system is shown to be capable of meeting these three goals, also detailed design issues remain to be solved.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 244641
• Report Number(s): LA-UR--96-1608; CONF-9606208--3; ON: DE96011215
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACTIVATION DETECTORS
D-T OPERATION
DESIGN
FUSION YIELD
ITER TOKAMAK
JET TOKAMAK
MATERIALS TESTING
NUCLEAR POWER
PLASMA DIAGNOSTICS
TFTR TOKAMAK
USES